What are common issues faced when trying to use PHP chart classes?

One common issue faced when using PHP chart classes is difficulty in customizing the appearance of the charts. To solve this, make sure to thoroughly read the documentation of the chart library you are using and explore all available customization options.

// Example of customizing appearance of a chart using Chart.js library
$chartData = [10, 20, 30, 40, 50];
$chartColors = ['red', 'blue', 'green', 'orange', 'purple'];

$chartOptions = [
    'scales' => [
        'yAxes' => [[
            'ticks' => [
                'beginAtZero' => true
            ]
        ]]
    ]
];

$chartConfig = [
    'type' => 'bar',
    'data' => [
        'labels' => ['A', 'B', 'C', 'D', 'E'],
        'datasets' => [
            [
                'label' => 'Example Chart',
                'data' => $chartData,
                'backgroundColor' => $chartColors
            ]
        ]
    ],
    'options' => $chartOptions
];

echo '<canvas id="myChart"></canvas>';

echo '<script>';
echo 'var ctx = document.getElementById("myChart").getContext("2d");';
echo 'var myChart = new Chart(ctx, ' . json_encode($chartConfig) . ');';
echo '</script>';